Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?

When it is alive we sing, when it is dead we clap our hands. What is it?

Wednesday, Steve and Pam go to a restaurant to eat lunch. After eating lunch, they pay the bill. But Steve and Pam do not pay the bill. So…who does?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

What time is it when an elephant sits on a fence?